All-in sustaining costs to produce one ounce of gold fell nearly 18 percent to $849 in the first-quarter ended March 31. This cost metric, adopted by producers in 2013, includes sustaining capital, exploration costs and general expenses.

All-in sustaining costs to produce one pound of copper more than halved to $1.73.

“Newmont had a strong start to the year despite lower metal prices,” said Chief Executive Officer Gary Goldberg.